Glass-blowing machine.



No. 698,8!8. Patented Apr. 29, I902.

L. H. COLBUBN.

GLASS BLOWING MACHINE.

(Application filed. Apr. 25, 1898.) (No Model.) 3 Sheets-Sheet l.

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, L. H. GOLBURN.

GLASS BLOWING PUMP-NINE.

(Application filed Apr. 25, 1898.

(No Model.) 3 Sheets-Sheet 2..

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No. 698,818. Patentd Apr. 29, I902. L. H. couaunu.

GLASS BLOWING MACHINE.

(Application filed Apr. 25, 1898.)

(No Model.)

3 Sheets-,Sheet 3.

: Nouns PETERS co mom-umo" wasmuc'rou n c 'machines.

UNITED STATES PATENT OFFICE.

LESLIE H. CO LBU=RN, OF TOLEDO, OHIO, ASSIGNOR TO THE TOLEDO GLASS 00.,OF TOLEDO, OHIO, A CORPORATION OF OHIO.

GLASS-BLOWING MACHI NE.

SPECIFICATION forming part of Letters Patent No. 698,818, dated April29, 1902.

Application filed April 25, 1898. Serial No. 678,733. (No model.) I

To all whom it may concern:

Be it known that I, LESLIE H. COLBURN, a citizen of the United States,residing at T0- ledo, in the county of Lucas and State of Ohio, haveinvented certain new and useful Improvements in Glass-Blowing Machines,of which the following is a specification, reference being bad thereinto the accompanying drawings. I

The invention relates to glass-blowing machines of that type in whichthe glass is gathered upon the end of a blowpipe and is then supportedin the blowing-machine, one end being in proper relation to a sectionalmold which is closed about it and the other end in proper relation to asource of air under pressure for efiecting the blowing, these machinesbeing commonly known as glass-blowing The invention consists inmechanism for closing the mold, holding it closed during the blowingperiod and then opening it, mechanism for effecting a rotation of theblowpipe, and in the peculiar construction of the means for supplyingthe air to the blowpipe and of regulating the pressure of suchair-supply; in the mechanism for wetting molds, and particularly in theconstruction of this mechanism, so that but a specified quantity ofwater will be sprinkled upon the molds at each operation, and, further,whereby this sprinkling is effected upon the withdrawal of the blowpipefrom the machine, and, further, in such an organized machine havingconnections for carrying out these various functions, and a motornormally disconnected therefrom, with means by which the operator canconnect the motor to the machine, so as to carry out the functionsthereof, and then be disconnected;

The invention further consists in the construction, arrangement, andcombination of the various parts, all as more full y hereinafterdescribed.

In the drawings, Figure l is a front elevation of a machine embodying myinvention. Fig. 2 is a side elevation thereof. Figs. 3 and 4 arehorizontal detail sections showing in plan the mechanism by which thewater-supply is controlled by the insertion and withdrawal of theblowpipe. Fig. 5 is a vertical section therethrough showing thewater-pipes I and the controlling-valves.

Fig. 6 is ahorizontal section showing in plan the mold and themold-actuating cam. Fig. 7 is a top plan view of the mechanism forrotating the blowpipe, showing the blowpipe as being inserted. Fig. 8 isa similar plan showing the blowpipe in position for blowing. Fig. 9 isahorizontal section showing in plan the tight and loose pulley and thebelt-shifting mechanism.

A is the frame of the machine, which supports the operating parts in thearms B. EX- tending from the vertical portion of the frame is supportedthe shaft 0, the lower end of which is preferably stepped and journaledin the bearings G of the mold-table 0 This shaft is provided with agear-wheel D, which meshes with the pinion E on the horizontal shaft F.This shaft F has any suitable means to connect it with a source ofpower. In this case I have shown it provided with a loose pulley a and atight pulley b.

c is a belt-shifter supported in bearings in the frame and having aflexible outer portion d,which has a handle arranged in proper proximityto the operator, so that he may connect the shaft F with its source ofpower to operate it by pulling on the shifter-rod to shift the belt. Assoon as the shaft F turns the shaft 0 will be turned one revolutionthrough the gearing described. As it approaches the end of thatrevolution a finger e on the shaft strikes a pin h on the shifter-barand shifts the belt again to the loose pulley. It will be obvious thatin pulling on the shifter-bar to restart the machine it must be firstbent down sufficiently so that the pin it will clear the finger e, andwhen the operator releases it it will return up into the path of thatfinger, so as to stop the machine in the manner described. Any otherform of clutch may be used-to connect the shaft 0 with its actuatingpower or motor. I

The lower end of the shaft is provided with a cam G, having a camwaytherein, as shown in Fig. 7. Engaging in this camway is a pin on thelink H, and this link is connected to the link I, which are connected tothe moldsections J. The camway is of such shape that in the inoperativeposition of the machinethat is, when it is not connected to its sourceof powerthe molds will be open and so that the first part of therotation will act to close the molds, that they will then be held closedduring the blowing period, but finally be opened again at the time themachine steps.

I believe I am the first to embodyin a machine of this kind a sectionalmold with a movable cam for positively closing it, holding it closed,and opening it by power-actuating mechanism, such mechanism being underthe control of the operator for starting it at each operation of themachine.

The controlling mechanism for the air-supply is of the followingconstruction: At the top of the shaft C is a cam L, which is intended toraise and lower a lever M, which at its outer end is connected to theair-supply nozzle N, which reciprocates in vertical guides in the frame,so that it may be made to approach and recede from the upper end of theblowpipe, as plainly shown in Fig. 2. Air is supplied to this nozzlefrom any suitable source, and the air may be under a substantially fixedpressure, and the variation of the pressure in the blowpipe can beentirely con trolled by causing the mouth of the nozzle N to approachmore nearly or to recede more or less from the upper end of theblowpipe, and this variation can be controlled, if desired, by changingthe shape of the cam L.

The blowpipe 2 is rotated through the following mechanism: 3 is afriction-wheel on the upper arm 13, driven by suitable gearing from theshaft C, and 4 and 5 are frictionwheels supported on spring-arms 6,which are secured to either side of the armB and slightly separated.These parts are so arranged that the blowpipe may be inserted betweenthe wheels 4 and 5, as shown in Fig. 8, by expanding the springslightly,and just after they pass the center of those wheels theblowpipe will strike the friction-disk 3, being held in contacttherewith by the springs 6 and rotated by the rotational movements ofthe disk 3.

In the previous state of the art devices have been produced forsprinkling the molds of glass-blowing machines; but so far as I am awarethese devices have been constantly connected up with a source ofwater-supply, and there has been no adequate means of measuring a fixedquantity of water for the sprinkling which takes place; nor has therebeen any means, so far as I am aware, in a machine having a stationarymold for automatically opening and closing the water-supply and limitingthe amount thereof, nor has any one employed the mechanism which Ihereinafter describe for effecting this result.

10 is a water-supply pipe having a shut-off valve 11 at any suitablepoint therein. This pipe discharges into a tank 12 above the mold. 13 isan exit-pipe fromthis tank, which leads to the nozzle or nozzles 14,arranged in such position that the discharge therefrom will strike themolds. In the pipes 10 and 13 are the valve-casings 15 and 16,respectively, and slidingly secured in these valve-casings is the rod17, which is provided with two ports 18, so arranged that either may beregistered with the port through its valve-casing; but when one is soregistered the other is out of registration. or a crank-pin on theface-plate 19 on the shaft 20, which is journaled in bearings on theframe of the machine. Loose on this shaft is a pulley 21, driven fromany suitable source of power, this pulley being constantly in mo tion.

22 is a collar keyed to the shaft 20, having the friction -face 23, ofvulcanized fiber or some such material, and the pulley 21 is forcedagainst the friction-face 23 by means of the spring 24, pressed at oneend against the pulley and at the other end against the collar 25 on theend of the shaft. The face-plate 19 is provided on opposite points onits periphery with the pins 26.

27 is a lever pivoted, preferably, on the arm 13 ofthe frame andrhavingat one end a hook 28 and at the other end an inclined bearing 29. Thislever is normally held by the spring 30 with its hook in the path of thepins 26, Figs. 3, 4, and 5. a

When the operator inserts the blowpipe in the bearing in the outer endof the arm 13, he will necessarily force the blowpipe between one sideof that bearing and the inclined bearing 29 on the lever 27, therebyrocking the lever slightly on its pivot sufficient to disengage the hook28 from the pin 26, the parts being then in the position shown in Fig.3. As

soon as the operator does this the motion of the pulley 21 will becommunicated, through the friction-disk 23 and collar 22, to the shaft20 and will rotate that shaft and with it the faceplate 19. As soon asthe blowpipe has been pushed into the bearing in the arm 13 to the endthereof the spring 30 will draw the lever back to the position shown inFig.- 4, in which position the hook 28 is in the path of the pins, andas soon as the face-plate has made a halfrevolution the second pin willengage the hook and the shaft 20 will stop. This halfrevolution upon theinsertion of the blowpipe will shift the rod 17 so that the port 18 atthe upper end of the rod 17 will be registered with the passage throughits valve-casing, while that port in the lower valve-casing 16 will bedrawn out of coincidence and that valve will be closed. During theblowing period, therefore, the water will run into the tank 12. As soonas the operator withdraws the blowpipe at the end of the blowing periodthe levers 27 will again be tripped, the faceplate 19 will make anotherhalf-revolution, and the rod 17 shifted to close the upper valve andopen the lower one, thereby shutting off the water-supply to the tank 12and allowing the water which has accumulated therein during the blowingperiod to be discharged upon the molds. In this way I control the supplyof water as to quantity, I start the sprinkling automatically upon theThe rod 17 is connected to a crank IOO withdrawal of the blow-pipe, and,in effect, stop it automatically after a given quantity of water hasfallen upon the mold.

The operation of the machine as a whole in brief is as follows: Theoperator inserts the blowpipe-in its supports. -In doing this hestartsthe Water to run into the tank 12. He then draws the shifter-rod downand out, so as to connect the mechanism with its motor. The mold is thenclosed, the blowpipe rotated, the air-conduit lowered into operatingproximity to the blowpipe, and the pressure regulated therein asdesired, and when the desired blowing period has passed and the articleis properly blown, which takes place in one rotation of the shaft C, thearm e, striking the pin 71', will again disconnect the motor from themechanism and the machine will be at rest, with the mold open. Theoperator thendrawing the blowpipe closes the water-supply to the tankand opens the discharge therefrom and the mold is sprinkled.

What I claim as my invention is- 1. In a glass-blowing machine, asectional mold, opening in a horizontal plane, a movable cam for openingand closing the moldin each operation and for positively holding it openat the close of the operation, means under the control of an operatorfor starting the cam, and automatic means for stopping it.

2. In a glass-blowing machine, in which there are employed a mold and adetachable blowpipe, sprinkling devices for the mold comprising astorage-reservoir, means for supplying water thereto started by theinsertion of the blowpipe in its support and means for stopping thesupply upon the Withdrawal of the blowpipe.

3. In a glass-blowing machine, the combination of a'blowpipe supportedin operative relation to the mold, ofan air-supply for delivering airunder pressure to the article to be blown arranged in proximity to themouth of the blowpipe, and means for varying the pressure of air in thearticle to be blown after each operation by varying the distance of saidair-supply from the blowpipe during the blowing period.

4. In a glass-blowing machine, comprising the blowpipe supported inoperative relation pressure having its discharge adj ustably supportedin proximity to the mouth ofxthe blowpipe, of automatic mechanism forvarying the distance between said air-supplying means and the blowpipeduring the blowing period to change the pressure in the article to be ILESLIE H. OOLBURN. Witnesses:

FREDERIOKL. GEnDEs,

HENRY C. TRUESDALL.

